Ee question in picture

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

When a septic tank backs up a goes in to clean it out

How do limiting factors most affect population size? ostop population growthrestrict population growthincrease population sizeresult in positive impactso